Draws directly from the mixing reservoir. Eliminates the possibility of contamination from transfer steps. Filters directly into the desired container. Available built-in prefilter increases throughput of particulate laden solutions such as serum containing media. Environmentally friendly with minimal plastic waste. Patented small design accepts a variety of collection vessels and reduces storage space and waste. Gamma irradiated, eliminates potential contamination by EtO residuals. Supor® membrane provides high flow rates. VacuShield & VacuShield PF vacuum filtration devices are innovative bottletop filters for fast vacuum filtration of 100 mL to 5 L of aqueous solutions.